I once got a springer spaniel male pup and I trained him to be the best pheasant hunting and duck retrieving dog I have ever been out with, meaning other peoples hunting dogs where I have been one of the hunters.
Actually though, the personality of a pup is a bit like the personality of a girl, they are all different, even as to great differences in litter mates. You roll the dice and take what you get.
Unless you can do as we did. Friends of the owner of the new breed of springer pups and we would go to their little farm, where eight tiny pups were free to roam, and we were able to mingle with the pups, as each one began to learn their names, then got first choice.
Too long of a story to tell here. Will mention though, that is spite of much I have read about it to the contrary, we had the best family dog, growing up with two young boys, that anyone could dream of having, as well as a great hunting dog.
